France, July 27 -- More than 325,000 people have fled their homes in the two countries, with some of the worst fires in their recent history burning across south-west France and central and eastern Spain.

French President Emmanuel Macron warned of hard times ahead as he visited a crisis centre in the city on Monday.

"The coming weeks will be tough and we have to hold out," he said.

Over the past six days, the wildfire near Bordeaux has ravaged 42,000 hectares, forced 220,000 people to flee and destroyed 240 houses.

"Mobilisation is still full and complete, particularly on the eve of a day that is expected to be marked by a significant rise in temperatures and a drop in humidity," the prefect of Gironde said late Monday, describing the...